Randomized, Controlled Trials, Observational Studies, and the Hierarchy of Research Designs

• John Concato

• Nirav Shah

• Ralph I. Horwitz

収録刊行物

• New England Journal of Medicine

  New England Journal of Medicine 342 (25), 1887-1892, 2000-06-22

  Massachusetts Medical Society

キーワード

• General Medicine

詳細情報

• CRID: 1364233270569295488
• NII論文ID: 30022553430
• NII書誌ID: AA00755156
• DOI: 10.1056/nejm200006223422507
• ISSN: 15334406
• ISSN: 00284793
• Web Site: http://www.nejm.org/doi/pdf/10.1056/NEJM200006223422507
• データソース種別:
  • Crossref
  • CiNii Articles